Energy and Motion Quiz

Maggie is investigating how mechanical energy affects the speed of a bicycle at the bottom of a hill after rolling down from the top of the hill. Which is the best way to measure the speed of the bicycle at the bottom of the hill?

• Time how long it takes the bicycle to get from the top of the hill to the bottom of the hill.

• Time how long it takes for the bicycle to travel a certain distance after reaching the bottom of the hill.

• Measure the distance the bicycle travels down the hill.

• Measure the distance the bicycle travels after rolling down the hill.

Look at the picture. A hair dryer is used to quickly dry wet hair. Which type of energy is used to dry hair quickly with a hair dryer?

• Light energy

• Thermal energy

• Mechanical energy

• Sound energy

An electric motor inside the hair dryer runs a fan to move air through the hair dryer. Which type of energy causes this fan to move?

• Light energy

• Thermal energy

• Mechanical energy

• Sound energy

Choose the correct terms to complete the sentences. Energy is found all around us. We can detect energy using our senses. Motion is an indicator of ________. The form of energy we detect with our eyes is light.

• sound energy

• thermal energy

• chemical energy

• light energy

• mechanical energy

Choose the terms, in order of appearance, that best complete the following sentences. A walking horse is an example of Mechanical energy. An oven uses _______ energy.

• electrical energy

• sound energy

• thermal energy

• light energy

• mechanical energy

A movie projector uses ______ energy to show moving pictures. Music is ______ energy.

• thermal; mechanical; sound; light

• thermal; sound; light; mechanical

• mechanical; thermal; light; sound

• light; sound; mechanical; thermal

• mechanical; light; sound; thermal

When you hear a train whistle blow in the distance, what type of energy are you noticing?

• Light energy

• Thermal energy

• Mechanical energy

• Sound energy

Part A: Which statement describes why the roller coaster car did not reach the finish?

• The roller coaster car did not have enough mechanical energy.

• The roller coaster car had too much mechanical energy.

• The roller coaster car had too much thermal energy.

• The roller coaster car did not have enough thermal energy.

Part B: Which of the following steps could the student try to make the roller coaster car reach the finish?

• Lower the height of the hill at the beginning.

• Increase the height of the hill at the beginning.

• Increase the height of the hump.

Look at the picture. A student uses this model to investigate how mechanical energy affects the speed of a toy car. The speed is measured by the ability of the toy car to make the loop. If the speed is too low, it will not make the loop. On the first attempt, the toy car does not make the loop. Which of the following should the student try to increase the speed of the toy car?

• Keep the height the same but add more track and move the support away from the loop.

• Increase the size of the loop.

• Lower the support and to give the car a longer distance before the loop.

• Raise the support to start the car at a higher position.